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Loblolly Pine (Pinus taeda) Response to Weed Control in Central Louisiana

Published online by Cambridge University Press:  12 June 2017

James D. Haywood
James D. Haywood*
Affiliation:
U.S. Dep. Agric., For. Serv., South. For. Exp. Stn., New Orleans, LA 70113 and is located at 2500 Shreveport Highway, Pineville, LA 71360
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Abstract

Herbaceous weed control was studied on a loblolly pine planting site in central Louisiana. Pine growth was enhanced without eradicating weeds; reducing weed biomass about 50% increased the mean inside bark volume of loblolly pine saplings 53% on the weeded treatments compared to the untreated control after five growing seasons in the field. Pines receiving both preplant weed control with glyphosate or disking and postplant weed control with a series of yearly treatments (1982, atrazine plus simazine; 1983, atrazine plus oxyfluorfen; 1984, hexazinone; and 1985, hexazinone) had 62% greater volume than pines on the preplant-only treatments. So, the best gains in loblolly pine volume required postplant weed control.

Keywords

Atrazine, 6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diamineglyphosate, N-(phosphonomethyl)glycinehexazinone, 3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4(1H, 3H)-dione-, oxyfluorfen, 2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzenesimazine, 6-chloro-N,N′-diethyl-1,3,5-triazine-2,4-diamineloblolly pine, Pinus taeda L.Pasture conversionatrazineglyphosatehexazinoneoxyfluorfensimazineAndropogon spp.
Type
Research
Information
Weed Technology , Volume 2 , Issue 4 , October 1988 , pp. 490 - 494
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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